scholarly journals Chiral partner structure of doubly heavy baryons with heavy quark spin-flavor symmetry

2018 ◽  
Vol 45 (7) ◽  
pp. 075006 ◽  
Author(s):  
Yong-Liang Ma ◽  
Masayasu Harada
Keyword(s):  
Heavy Quark ◽  
Flavor Symmetry ◽  
Heavy Baryons ◽  
Quark Spin ◽  
Chiral Partner

scholarly journals CHARMING BARYONS

2014 ◽  
Vol 26 ◽  
pp. 1460124
Author(s):  
C. GARCIA-RECIO ◽  
L. L. SALCEDO ◽  
D. GAMERMANN ◽  
J. NIEVES ◽  
O. ROMANETS ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Flavor Symmetry ◽  
Minimal Extension ◽  
Heavy Flavor ◽  
Vector Mesons ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Experimental Values

We study odd-parity baryonic resonances with one heavy and three light flavors, dynamically generated by meson-baryon interactions. Special attention is paid to Heavy Quark Spin Symmetry (HQSS), hence pseudoscalar and vector mesons and baryons with Jπ = 1/2+ and 3/2+ are considered as constituent hadrons. For the hidden-charm sector ([Formula: see text]), the meson-baryon Lagrangian with Heavy Flavor Symmetry is constructed by a minimal extension of the SU(3) Weinberg-Tomozawa (WT) Lagrangian to fulfill HQSS, such that not new parameters are needed. This interaction can be presented in different formal ways: as a Field Lagrangian, as Hadron creation-annihilation operators, as SU(6)×HQSS group projectors and as multichannel matrices. The multichannel Bethe-Salpeter equation is solved for odd-parity light baryons, hidden-charm N and Δ and Beauty Baryons (Λb). Results of calculations with this model are shown in comparison with other models and experimental values for baryonic resonances.

scholarly journals Heavy-quark spin and flavor symmetry partners of the X(3872) revisited: What can we learn from the one boson exchange model?

2019 ◽  
Vol 99 (9) ◽  
Author(s):  
Ming-Zhu Liu ◽  
Tian-Wei Wu ◽  
Manuel Pavon Valderrama ◽  
Ju-Jun Xie ◽  
Li-Sheng Geng
Keyword(s):  
Heavy Quark ◽  
Exchange Model ◽  
Flavor Symmetry ◽  
Boson Exchange ◽  
Quark Spin ◽  
The One

scholarly journals HEAVY BARYONS IN A QUARK MODEL

2008 ◽  
Vol 23 (19) ◽  
pp. 2817-2860 ◽  
Author(s):  
W. ROBERTS ◽  
MUSLEMA PERVIN
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Model Prediction ◽  
Spin Symmetry ◽  
Heavy Quarks ◽  
Charmed Baryon ◽  
Heavy Baryons ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry

A quark model is applied to the spectrum of baryons containing heavy quarks. The model gives masses for the known heavy baryons that are in agreement with experiment, but for the doubly-charmed baryon Ξcc, the model prediction is too heavy. Mixing between the ΞQ and Ξ′Q states is examined and is found to be small for the lowest lying states. In contrast with this, mixing between the Ξbc and Ξ′bc states is found to be large, and the implication of this mixing for properties of these states is briefly discussed. We also examine heavy-quark spin-symmetry multiplets, and find that many states in the model can be placed in such multiplets. We compare our predictions with those of a number of other authors.

scholarly journals Heavy Quark Spin Symmetry and Heavy Baryons: Electroweak Decays

2010 ◽  
Vol 50 (1-4) ◽  
pp. 113-119
Author(s):  
C. Albertus ◽  
J. E. Amaro ◽  
E. Hernández ◽  
J. Nieves
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Heavy Baryons ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Electroweak Decays

scholarly journals Heavy baryons with strangeness in soliton models

2015 ◽  
Vol 39 ◽  
pp. 1560088
Author(s):  
H. Weigel ◽  
J. P. Blanckenberg
Keyword(s):  
Symmetry Breaking ◽  
Heavy Quark ◽  
Chiral Symmetry ◽  
Degrees Of Freedom ◽  
Heavy Quarks ◽  
Flavor Symmetry ◽  
Model Calculations ◽  
Soliton Model ◽  
Heavy Baryons

We present some recent results from soliton model calculations for the spectrum of baryons with a single heavy quark. The model comprises chiral symmetry for light flavors and (approximate) heavy spin–flavor symmetry for the heavy quarks. We focus on flavor symmetry breaking for strangeness degrees of freedom.

scholarly journals Triply heavy baryons and heavy quark spin symmetry

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
J. M. Flynn ◽  
E. Hernández ◽  
J. Nieves
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Heavy Baryons ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry

scholarly journals STATUS OF CHIRAL DOUBLERS OF HEAVY-LIGHT HADRONS IN LIGHT OF RECENT BABAR, CLEO, BELLE AND SELEX Ds STATES

2005 ◽  
Vol 20 (02n03) ◽  
pp. 229-239 ◽  
Author(s):  
MACIEJ A. NOWAK
Keyword(s):  
Heavy Quark ◽  
Chiral Symmetry ◽  
Main Idea ◽  
Spin Symmetry ◽  
Spin Parity ◽  
Quark Spin ◽  
New States ◽  
Heavy Quark Spin Symmetry ◽  
Effective Theories ◽  
Chiral Partner

We explain the main idea of the chiral doublers scenario, originating from simultaneous constraints of chiral symmetry and of heavy quark spin symmetry on effective theories of heavy-light hadrons. In particular we discuss chiral doublers for mesons, chiral doublers for excited mesons, chiral doublers for baryons and chiral doublers for excited baryons. We point out the arguments why new states Ds(2317) and Ds(2457) might be viewed as chiral doublers of Ds and [Formula: see text]. Then we comment on non-strange mesons D0(2308) and D′1(2427) observed by Belle and Focus, and on Θc(3099) signal observed by H1. Finally, we point out that very recent discovery by SELEX of Ds(2632), if confirmed by other experiments and if spin-parity of this state is 1-, may be interpreted as a signal for chiral doubler of Ds1(2536). Such an identification implies another narrow, spin-parity 2-Ds state ca 37 MeV above the new 1-, corresponding to chiral partner of Ds2.

scholarly journals Non-Relativistic Model for the Semileptonic Λb→Λc Decay

1997 ◽  
Vol 12 (03) ◽  
pp. 195-204 ◽  
Author(s):  
Debrupa Chakraverty ◽  
Triptesh De ◽  
Binayak Dutta-Roy ◽  
K. S. Gupta
Keyword(s):  
Heavy Quark ◽  
Decay Width ◽  
Branching Ratio ◽  
Relativistic Model ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons

We calculate the decay width for [Formula: see text] in the framework of a non-relativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the heavy quark symmetry. The branching ratio for the above process as calculated here agrees reasonably well with the experimental value.

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